Change support for default disposal scope

[ipjohnson]

Currently there is the ability to change the default disposal scope provider through the constructor. There are a two different better ways to handle this at compile time vs at locate time.

• Custom default lifestyle that applies custom disposal logic
• Replace the IDisposalScopeExpressionCreator to wire in logic for disposal

[ipjohnson]

This implemented and will be part of 7.0